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Update web-platform-tests to revision 4333a1d2f109795547fc5e22ebfc8481fa649de7

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This commit is contained in:
WPT Sync Bot 2018-06-22 21:05:34 -04:00
parent 728ebcc932
commit 8c46b67f8e
456 changed files with 10561 additions and 5108 deletions
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24
tests/wpt/web-platform-tests/performance-timeline/webtiming-resolution.any.js Normal file
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function testTimeResolution(highResTimeFunc, funcString) {
test(() => {
const t0 = highResTimeFunc();
let t1 = highResTimeFunc();
while (t0 == t1) {
t1 = highResTimeFunc();
}
assert_greater_than_equal(t1 - t0, 0.02, 'The second ' + funcString + ' should be much greater than the first');
}, 'Verifies the resolution of ' + funcString + ' is at least 20 microseconds.');
}
function timeByPerformanceNow() {
return performance.now();
}
function timeByUserTiming() {
performance.mark('timer');
const time = performance.getEntriesByName('timer')[0].startTime;
performance.clearMarks('timer');
return time;
}
testTimeResolution(timeByPerformanceNow, 'performance.now()');
testTimeResolution(timeByUserTiming, 'entry.startTime');